the johns hopkins researcher was stabbed to death as he walked home. for wagoner, as the fifth time since 1991 he has been accused of violent crime. but despite that history, a judge as recently as april refuse to yank them operation and get him off the street. in march of 1992, he was convicted of robbery with a deadly weapon. two years later in 1994 came the second conviction for the same crime. this time, he was put in prison with a 10-year sentence. prosecutors need is history. the 2008, they threatened to seek a maximum penalty when he was charged with choking his girlfriend until she passed out. they settled for a guilty plea to assault and no jail time. on september 11th, 2008, he was given a suspended jail sentence for assault and but observation. since then, he has been found guilty of violating probation twice. first in august 2009 and again in april of this year.